/export/starexec/sandbox/solver/bin/starexec_run_ttt2-1.17+nonreach /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files


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MAYBE

Problem:
 plus(0(),x) -> x
 plus(s(x),y) -> s(plus(x,y))
 times(0(),y) -> 0()
 times(s(x),y) -> plus(y,times(x,y))
 p(s(x)) -> x
 p(0()) -> 0()
 minus(x,0()) -> x
 minus(0(),x) -> 0()
 minus(x,s(y)) -> p(minus(x,y))
 isZero(0()) -> true()
 isZero(s(x)) -> false()
 facIter(x,y) -> if(isZero(x),minus(x,s(0())),y,times(y,x))
 if(true(),x,y,z) -> y
 if(false(),x,y,z) -> facIter(x,z)
 factorial(x) -> facIter(x,s(0()))

Proof:
 Open